Tramp

The Tramp (real name unknown) was an elderly homeless man living in the Seattle Underground.

History
The Tramp’s history prior to residing in the Underground was unknown, though he makes it clear that a life on the streets has taken its toll on him, and left him jittery and eccentric, as well as an alcoholic. The Tramp encounters Carl Kolchak and Louise Harper exploring the Underground searching for Richard Malcolm when they stumble into the area he is living in and accidentally wake him up. The hungover Tramp explains that they are the only people he has seen in the Underground, and Kolchak offers to pay him should the Tramp report to him if he sees anyone else in the Underground, having correctly surmised that the killer resides in the Underground.

Kolchak later finds the Tramp’s corpse hidden inside Malcolm’s lair while exploring it. It is implied that the Tramp had been exploring the Underground in hopes of seeing something and thus being payed, and was killed by Malcolm for either getting to close to his lair or discovering his location.